I just watched this for the first time in a long time - I had forgotten both how imaginative the images were, and how witty the movie is. I had not forgotten however the opening scenes which are (with the scene at the Candlelight Club in Waterloo Bridge) among the most romantic ever filmed.
Anyone interested in politics or history will love the movie's offhand references - anyone interested in romance will be moved by Hunter-Niven, and anyone who loves visual imagery will enjoy the depiction of the afterworld.
My favorite movie remains "Odd Man Out" made near the same time - but this one is superb.